this may sound silly, but start telling yourself there's no way you're taking the shot. its the same method i use to jump into icy cold swimming holes up here - "There's no possible way i'm getting in that water." i say that to myself even as i'm jumping and my body doesn't freak out. so maybe saying " there's no possible way i'm taking this shot." with your brain and body 'tricked' you'll do things just like in practice. works for me, but i'm a sucker for reverse psychology.